flame infrared emission spectroscopy Fourier transform flame infrared emission spectroscopy Spectroscopy where the sample is heated in a flame and the infrared radiation (0.78–1000 μm) emitted during cooling is detected. The spectrum obtained is subject to a Fourier transform. Fourier transform flame infrared emission spectroscopy CHMO:0000651 Fourier transform FIRE FT-FIRE Fourier transform flame infra-red emission spectrometry